Results 111 to 120 of about 303 (126)

The Development of the Sorus and Sporangium and the Prothallus of Peranema cyatheoides, D. Don. [PDF]

open access: yesAnnals of Botany, 1916
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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An Asexual Growth from the Prothallus of Pteris Cretica

Journal of Cell Science, 1874
ABSTRACT While studying the development of the archegonium in the Polypodiaceœ, in the botanical laboratory of the University of Strassburg, a peculiarity was first noticed in the prothallus of Pteris cretica which seems to have an important bearing on the question of the fern prothallus in general.
exaly   +2 more sources

XXV.—The Prothallus of Tmesipteris Tannensis

Transactions of the Royal Society of Edinburgh, 1917
The Psilotaceæ constitute one of the most interesting of existing Pteridophyte groups. This interest is mainly due to their phylogenetic isolation. They are perhaps the most isolated of existing types—showing no close affinity to other Pteridophytes. They are very highly specialised in their anatomy, habit, and habitat, and limited to a comparatively ...
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Self-fertility in a Prothallus of Equisetum telmateia, Ehr.

Nature, 1964
FOR more than a hundred years there have been conflicting statements regarding sex-determination in Equisetum. In the earliest accounts, the prothalli were described as unisexual. Later, it became accepted that archegoniate prothalli were also capable of bearing antheridia.
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Morphology of the prothallus and juvenile sporophytes of some species ofDryopteris

Proceedings / Indian Academy of Sciences, 1977
Prothalli and juvenile sporophyte of seven species ofDryopteris are described. Spore germination is of Vittaria-type and prothallial development is of the Aspidium-type with the characteristic range of variations in the different species.
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XXII.—The Autecology of Bracken (Pteridium aquilinum (L.) Kuhn): The Germination of the Spore, and the Development of the Prothallus and the Young Sporophyte

Proceedings of the Royal Society of Edinburgh. Section B. Biology, 1949
The rapid spread of bracken in some parts of the country has led to considerable investigation into the habits of the plant. But in almost all cases it is the spread of the adult sporophyte which has been described, and little attention has been paid to the insignificant, complementary half of the life cycle—the prothallus.
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Cryopreservation of Neottopteris nidus prothallus and green globular bodies by droplet-vitrification.

Cryo letters, 2014
Neottopteris nidus prothalli and green globular bodies (GGBs) were successfully cryopreserved by droplet-vitrification. Prothalli were subjected to different treatments. The following parameters were studied: the age of in vitro mother plants from which prothalli were originated (30 to 90-day old), length of exposure to loading solution (LS) (20 to 40 ...
Tengmin, Li   +3 more
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